Ammonium dihydrogen phosphate (ADP), or mono ammonium phosphate, NH4H2PO4, is formed when a solution of phosphoric acid is added to ammonia until the solution is distinctly acidic. It crystallizes in tetragonal prisms. Mono ammonium phosphate is often used in the blending of dry agricultural fertilizers.

  • Formula: H6NO4P
  • CAS no. : 7722-76-1
  • EC no. : 231-764-5

Application

 
  • As a fertilizer
  • As dry fire extinguisher

Specification

 
Moisture per cent by weight, maximum 1.0
Total nitrogen all in ammoniacal form percent by weight, minimum 11.0
Neutral ammonium citrate soluble phosphates (as P 205) per cent by weight, minimum 52.0
Water soluble phosphates (as P 205) percent by weight, minimum 44.2
Particle size-90 per cent of the material shall pass through 4 mm IS sieve and be retained on 1 mm IS sieve.Not more than 5 per cent shall be below 1 mm IS sieve.

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